21 interview questions on Typescript - Overview for developers (2026)

13 votes1434 runs0 comment

13 votes1422 runs0 comment

11 votes1355 runs0 comment

8 votes1476 runs

8 votes1327 runs

7 votes873 runs1 comment

6 votes1389 runs0 comment

type-inference

6 votes1372 runs0 comment

5 votes1377 runs0 comment

5 votes1316 runs0 comment

configuration

4 votes1354 runs0 comment

4 votes1320 runs0 comment

3 votes1353 runs0 comment

3 votes1327 runs

configuration

tsconfig.json

3 votes1326 runs1 comment

2 votes430 runs1 comment

1 vote853 runs0 comment

Jakeat Nov 3, 2023

1 vote659 runs2 comments

1 vote197 runs0 comment

0 vote1327 runs2 comments

21 interview questions on Typescript - Overviewfor developers (2026)

Test your technical skills before an interview of Typescript - Overview with 21 corrected questions. Beginner, Intermediate or Expert level.

21 interview questions on Typescript - Overviewfor developers (2026)

Test your technical skills before an interview of Typescript - Overview with 21 corrected questions. Beginner, Intermediate or Expert level.

Which of the following utility types makes all properties of a given type optional?

Define a custom type that represents a coordinate with an x and y property of type number in Typescript

Typescript: What is the type of result?

Create a generic identity function that returns the passed value in Typescript

Write a generic interface in Typescript

Import an add function from a TypeScript module math.ts

Typescript: What is the inferred type of the result variable?

Find the error in the following TypeScript code:

Typescript: What is the resulting type of MyType in the following TypeScript code?

What file is used to configure TypeScript?

Explain the difference between the `any` and `unknown` types in TypeScript.

What is the result of compiling the following TypeScript code?

Create a utils namespace that contains a Logger class for handling logging.

Which configuration option in tsconfig.json allows specifying files to include in the compilation?

What is the main purpose of generics in TypeScript?

What is the resulting type of Exclude<string | number | boolean, number>?

What is a tuple in TypeScript?

Declare a string type variable in TypeScript

Write a function in TypeScript that takes a number as input and returns its square.

How to apply a class decorator to a TypeScript class?